Plumber&#39;s level



FIG. 1 is a side elevational view of a “plumber's level” showing my new design;

FIG. 2 is a right end view thereof;

FIG. 3 is a left end view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a “plumber's level”, as shown and described. 